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Manipal University 2008 B.E Mechanical Engineering FIFTH SEMESTER (MECHANICAL ENGG.) END SEMESTER S- SUBJECT : MECHANICAL DESIGN & DRAWING (MEE-307) (REVISED CREDIT SYSTEM) - Question Paper

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FIFTH SEMESTER B.E. (MECHANICAL ENGG.) DEGREE END SEMESTER exams
JUNE - 2008
SUBJECT : MECHANICAL DESIGN & DRAWING (MEE-307)
(REVISED CREDIT SYSTEM)

 Reg. No.

MANIPAL INSTITUTE OF TECHNOLOGY

(A Constituent Institute of Manipal University, Manipal)

ITT

FIFTH SEMESTER B.E. (MECHANICAL ENGG.) DEGREE END SEMESTER EXAMINATIONS

JUNE - 2008

SUBJECT : MECHANICAL DESIGN & DRAWING (MEE-307) (REVISED CREDIT SYSTEM)

10/06/2008

MAX.MARKS: 50

Time: 4 Hours.

Instructions to Candidates

Design Data Handbook is permitted

Additional data required may be appropriately assumed

Assumptions made must be clearly mentioned

1. Draw involute tooth profile for a pair of spur gears, showing at least 2 teeth on each gear. Gears have the following specifications

Tooth profile    : 20o full depth

No. of teeth on pinion    : 20

Gear ratio    : 1.2

Module    : 10 mm    15

2. Design the connecting rod for a petrol engine having the following specification Indicated power at 1600 rpm = 25 kW Stroke length    = 220 mm

Speed    = 1600 rpm

Compression ration    = 8

Mean effective pressure    = 1.45 MPa

maximum explosion pressure = 2.45 MPa

Draw two views of the connecting rod and show two views of the connecting rod

OR

Design a centrifugal pump impeller to lift 90 liters/s of water with an effective head of 15m. Motor speed is 1440 rpm and ratio of impeller diameters is 0.5 . What type of vane is recommended and why ? Draw two views of the impeller.    35

(MEE-307)

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